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Hello,
I am working on a project were I am reading pressure and temperature from a sensor (BMP085) and put out a pwm signal to dim a lamp based on my readings. I am doing the project on an Arduino Uno board.
The code is very simple and use two standard Arduino libraries, wire.h for I2C...
Do you know any commercially available systems that use this technique? And it has to be something that I can interface with a microprocessor. The only "phaseshifting" equipment I have found so far is handheld measurement-devices and they can't be used that way.
Re: Need advice about sensors for collision avoidance outdoo
When I read about it, it seems like when you mix two measured phases you get an expression that is a cosine of the phase-shift instead of the actual phase-shift, which makes as you mentioned only the first 180 degrees unambigous.
So...
Re: Need advice about sensors for collision avoidance outdoo
I've read about that and I actually thought that you could only use 180 degrees phase shift or perhaps even less, before you got ambiguity unless you do several measurements
Have you considered Computer Vision? You should be able to find readymade programs for tracking certain colours. THe all you have to buy is a simple camera of some sort, depending on processor of course.
Thx for the advice, but the problem with those devices seems to be the interface. I can't seem to find any way to use it with a computer or microprocessor.
I have read about similar divices from Leica and they seems to be using face-shift in their devices in the same price range.
Since I will...
If its industrial robotics your interested in, i wuold say sweden is a good alternetive. Most universitys in sweden has a close connection to ABB robotics.
Re: Need advice about sensors for collision avoidance outdoo
The reason I considered a TOF-system is because there is systems that i know work outdoors that uses the TOF-principle.
i know that neato use triangulation in their system but I don't know how robust the system is or how bad i will...
Re: Need advice about sensors for collision avoidance outdoo
Thx again for the links and the help.
I will have to consider this a little longer. I was hoping to find something like the one used by Neatorobotics. Their system is apperently very cheap to build by yourself, approx 30 dollars...
Thx for the links and for your help.
But I think you misunderstood me litlle bit, I am still interested in LASER-module, I just don't want bulid it myself.
I have found some systems myself, but it would be nice to hear something about a system from someone who isn't bias.
Though I must say...
I have decided that I will probably not try to build any LASER sensor myself. But I would need something of the shelf for testing purpose. Any tips on systems that could work?
Both heterodyne systems and TOF is interesting.
Re: Need advice about sensors for collision avoidance outdoo
I can probably get hold of it through my university article database, so thx for the advice. Will check it out.
This is the reason I dismissed TOF measurement of laser from the beginning.
Hopefully triangulation of some sort...
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